89BSD Digital Output Stainless Steel with O-Ring Seal Pressure/Temperature Read-Out Digital Output (24-bit DS ADC) ASIC Calibrated Absolute, Sealed Gage 9mm Diameter DESCRIPTION The 89BSD is a 9mm diameter small profile, media compatible, piezoresistive silicon pressure sensor packaged in a 316L stainless steel housing. This low power 24-bit DS ADC digital output pressure sensor supports an I2C interface protocol and is designed for threaded o-ring mounting. A custom ASIC is used for temperature compensation and offset correction. The sensing package utilizes silicone oil to transfer pressure from the 316L stainless steel diaphragm to the sensing element. A flex cable allows the 89BSD to connect to a smaller connection terminal where size is of primary concern. The 89BSD is designed for high performance, low pressure applications. For a similar sensor with a plastic threaded fitting, refer to the LM pressure transducer. FEATURES APPLICATIONS Threaded/Weldable I2C Interface Low Power: <1A Standby Power: <0.15A Supply Voltage: 1.8 to 3.6Vdc Level Controls Tank Level Measurement Corrosive Fluids and Gas Measurement Systems Sealed Systems Manifold Pressure Measurement Barometric Pressure Measurement Dive Computers STANDARD RANGES Range BarA BarS 0 to 006 0 to 012 0 to 018 0 to 028 0 to 030 Intermediate pressure ranges available, contact factory 89BSD www.meas-spec.com 1/6 June 2014 89BSD Digital Output PERFORMANCE SPECIFICATIONS Supply Voltage: 3Vdc Ambient Temperature: 25C (unless otherwise specified) PARAMETERS MIN TYP ADC Input Voltage Range 1.8 MAX UNITS 24 bit 3.6 V Supply Current See Table 1 mA Pressure Resolution See Table 3 %Span 0.3 %Span Total Error Band See Graph 1 %Span Conversion Time See Table 2 ms Pressure Accuracy Long Term Stability Compensated Temperature 0.2 -20 Temperature Resolution NOTES 2 3 3 %Span/yr +85 See Table 3 C C Temperature Accuracy -2 +2 C Operating Temperature -40 +85 C Storage Temperature -40 +125 C Pressure Overload 2X Rated 4 Pressure Burst 3X Rated 5 Interface Type Media, Pressure Port 2 IC 6 Liquids and gases compatible with 316/316L Stainless Steel Notes 1. Coefficients must be read by microcontroller software and are to be used in a mathematical calculation for converting D1 and D2 into compensated pressure and temperature values. For calculation methods and coefficients, see application note APP-01006. 2. Output is not ratiometric to supply voltage. 3. Oversampling ratio: 256 / 512 / 1024 / 2048 / 4096. See Table 2. 4. 2X or 400psi, whichever is less. The maximum pressure that can be applied without changing the transducer's performance or accuracy. 5. 3X or 600psi, whichever is less. The maximum pressure that can be applied to a transducer without rupture of either the sensi ng element or transducer. 2 2 6. Output protocol is I C only. CSB is tied to GND, setting I C address: 1110111 89BSD www.meas-spec.com 2/6 June 2014 89BSD Digital Output Table 1: Supply Current Characteristics PARAMETERS Symbol Conditions OSR Supply Current (1 Sample per second) Standby Supply Current Table 2: Analog Digital Converter (ADC) PARAMETERS Symbol UNITS During Conversion 1.4 mA @ 25C 0.02 0.14 A MIN TYP MAX UNITS 7.40 3.72 1.88 0.95 0.48 8.22 4.13 2.08 1.06 0.54 9.04 4.54 2.28 1.17 0.60 ms Conditions tC MAX A OSR Conversion Time TYP 12.5 6.3 3.2 1.7 0.9 IDD Peak Supply Current MIN 4096 2048 1024 512 256 4096 2048 1024 512 256 Table 3: Typical Resolution OSR Typical Pressure Resolution (%Span) Typical Temperature Resolution (C) 4096 0.0015 0.002 2048 0.0025 0.003 1024 0.003 0.005 512 0.005 0.008 256 0.008 0.012 Graph 1: 89BSD www.meas-spec.com 3/6 June 2014 89BSD Digital Output PERFORMANCE SPECIFICATIONS 89BSD www.meas-spec.com 4/6 June 2014 89BSD Digital Output BLOCK DIAGRAM 89BSD www.meas-spec.com 5/6 June 2014 89BSD Digital Output RECOMMENDED WRENCH DIMENSIONS ORDERING INFORMATION 89BSD - 012BA - A Fitting Type (See Table 4) Type (A = Absolute, S = Sealed Gage) Pressure Range Model NORTH AMERICA EUROPE Measurement Specialties 45738 Northport Loop West Fremont, CA 94538 Tel: 1-800-767-1888 Fax: 1-510-498-1578 Sales: pfg.cs.amer@meas-spec.com Measurement Specialties (Europe), Ltd. 26 Rue des Dames 78340 Les Clayes-sous-Bois, France Tel: +33 (0) 130 79 33 00 Fax: +33 (0) 134 81 03 59 Sales: pfg.cs.emea@meas-spec.com ASIA Measurement Specialties (China), Ltd. No. 26 Langshan Road Shenzhen High-Tech Park (North) Nanshan District, Shenzhen 518057 China Tel: +86 755 3330 5088 Fax: +86 755 3330 5099 Sales: pfg.cs.asia@meas-spec.com The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rig hts to the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical param eters can and do vary in different applications. All operating parameters must be validated for each customer application by customer's technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of others. 89BSD www.meas-spec.com 6/6 June 2014 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: TE Connectivity: 89BSD012BS-A 89BSD006BA-A 89BSD-028BA-A